twoway (hist abs_diff_w_r if n_ud==1 & S_pds==1, yla(,nogrid) frac lcolor(gs12) fcolor(none)), graphregion(color(white)) ///
 legend(off) xtitle("Absolute Value of Difference as a Share of True Value", size(small)) ///
 xline(0.1883703 0.5339062, lcolor(black) lpattern(-)) text(0.2 0.32 "Med:0.19" 0.2 0.68 "90th:0.53" , size(vsmall) )
graph export "${figures}\FigureE2.pdf", replace 